This is how you would usually do it:

&lt;!-- language: lang-rb --&gt;

    link_to &#39;Click&#39;, my_path(anchor: &#39;sometext&#39;)

Your routes don&#39;t have much to do with it, since the anchor part (`#something`) is not transferred to the server, it&#39;s a pure client-side thing.

I recognize this is an old post, but I thought I would contribute my recent discovery:

    &lt;%= link_to &quot;New Person&quot;, polymorphic_path([:new, person], anchor: &quot;profile&quot;) %&gt;

See the [API Docs][1] for details.


  [1]: http://apidock.com/rails/ActionController/PolymorphicRoutes/polymorphic_url

I am getting an exception and I can&#39;t find the reason of it.

The exception I get is :

&gt; java.lang.IllegalAccessError: tried to access method Connected.getData(Ljava/lang/String;)Ljava/sql/ResultSet; from class B

The method is public.

    public class B
    {
      public void myMethod()
      {
       Connected conn = new Connected();  // create a connected class in order to connect to The DB 
       ResultSet rs = null;  // create a result set to get the query result
       rs = conn.getData(sql); // do sql query
      }
    }

    public class Connected 
    {
     public ResultSet getData(String sql) 
	{
	  ResultSet rs = null;
	  try 
	  {
	     prepareConnection();
	     stmt = conn.createStatement();
	     stmt.execute(sql);
	     rs = stmt.getResultSet();
	  }
	  catch (SQLException E) 
          {
	    System.out.println(&quot;Content.getData Error&quot;);
   	    E.printStackTrace();
           }
	return rs;
	}

i am using apache tomcat 5.5.12
and JAVA 1.6


java.lang.IllegalAccessError: tried to access method

I have a multidimensional array where some objects exist and others don&#39;t. I keep getting a

**Method &quot;code&quot; for object &quot;stdClass&quot; does not exist in...**?

The code I am using in my template is:

    {% for item in items %}
        &lt;p&gt;{% if item.product.code %}{{ item.product.code }}{% endif %}&lt;/p&gt;
    {% endfor %}

Some products do not have this code and unfortunately this data structure is provided via a feed, so I cannot change it.

When I looked at the Twig documentation I interpreted that if an object or method was not there it would just return null?

How do you check if an object exists in the Twig templating engine in Symfony2?

How to add a hash parameter in link_to. I need to generate a URL something like this..

    /p/generate/#sometext

This is how my code looks now.

    link_to &quot;Click&quot;,my_path

How to add the hash parameter to my routes method.


**Now for the answer**

When I posted the question, I didn&#39;t got through the url helpers API fully. 
http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-link_to

I did now. :) .I found the answer.

    link_to &quot;Click&quot;, my_path(:anchor =&gt; &quot;sometext&quot;)

M.cypher below almost got it. :)

Adding Hash parameter in the URL Rails Routes

How to add a hash parameter in link_to. I need to generate a URL something like this..
<pre><code class="hljs language-bash">/p/generate/#sometext
</code></pre>
This is how my code looks now.
<pre><code class="hljs language-arduino">link_to "Click",my_path
</code></pre>
How to add the hash parameter to my routes method.
Now for the answer
When I posted the question, I didn't got through the url helpers API fully.
<a href="http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-link_to" target="_blank" rel="noopener noreferrer">http://api.rubyonrails.org/classes/ActionView/Helpers/UrlHelper.html#method-i-link_to</a>
I did now. :) .I found the answer.
<pre><code class="hljs language-ini">link_to "Click", my_path(:anchor => "sometext")
</code></pre>
M.cypher below almost got it. :)

My app is using Rails 3.0.4 and Devise 1.1.7.

I&#39;m looking for a way to prevent users from sharing accounts as the app is a subscription based service.  I&#39;ve been searching for over a week, and I still don&#39;t know how to implement a solution.  I&#39;m hoping someone has implemented a solution and can point me in the right direction.   

**Solution** (Thank you everyone for your answers and insight!)

In application controller.rb

    before_filter :check_concurrent_session

    def check_concurrent_session
      if is_already_logged_in?
        sign_out_and_redirect(current_user)
      end
    end

    def is_already_logged_in?
      current_user &amp;&amp; !(session[:token] == current_user.login_token)
    end

In session_controller that overrides Devise Sessions controller:

    skip_before_filter :check_concurrent_session
    
    def create
      super
      set_login_token
    end
    
    private
    def set_login_token
      token = Devise.friendly_token
      session[:token] = token
      current_user.login_token = token
      current_user.save
    end

In migration AddLoginTokenToUsers

    def self.up
      change_table &quot;users&quot; do |t|
        t.string &quot;login_token&quot;
      end
    end

    def self.down
      change_table &quot;users&quot; do |t|
        t.remove &quot;login_token&quot;
      end
    end


Devise limit one session per user at a time

I am loading a YAML file in Rails 3.0.9 like this:

    APP_CONFIG = YAML.load(File.read(File.expand_path(&#39;../app.yml&#39;, __FILE__)))

It loads the all of the contents like hierarchical hashes, no problem.  The part I don&#39;t like is the fact that the hashes can only be accessed with single or double quotes but not a symbol.  

    APP_CONFIG[&#39;mailer&#39;][&#39;username&#39;]  # works fine
    APP_CONFIG[:mailer][:username]    # doesn&#39;t

Any thoughts?

Rails load YAML to hash and reference by symbol

Since upgrading to Rails 3.1 I&#39;m seeing this warning message in my development log:

&gt; WARN  Could not determine content-length of response body. Set content-length of the response or set `Response#chunked = true`

What does this mean and how can I remove it? Is it a problem?

What does &quot;WARN Could not determine content-length of response body.&quot; mean and how to I get rid of it?

I created a new Rails project using `rails 3.1.0.rc4` on my local machine but when I try to start the server I get:
Could not find a JavaScript runtime. See [here][1] for a list of available runtimes. (`ExecJS::RuntimeUnavailable`)

Note: This is not about Heroku.


  [1]: https://github.com/sstephenson/execjs

Rails - Could not find a JavaScript runtime?

How do I add a default value to a column that already exists through a migration? 

All the documentation I can find shows you how to do it if the column doesn&#39;t already exist but in this case it does. 

Add a default value to a column through a migration

I have an ASP.net MVC controller called `Designs` that has an action with the following signature:

    public ActionResult Multiple(int[] ids)

However, when I try to navigate to this action using the url:

&lt;!-- language: lang-none --&gt;

    http://localhost:54119/Designs/Multiple?ids=24041,24117

The `ids` parameter is always null. Is there any way to get MVC to convert the `?ids=` URL query parameter into an array for the action? I&#39;ve seen talk of using an action filter but as far as I can tell that will only work for POSTs where the array is passed in the request data rather than in the URL itself.

How do I accept an array as an ASP.NET MVC controller action parameter?

I&#39;m trying to version my API like Stripe has. Below is given the latest API version is 2.

`/api/users` returns a 301 to `/api/v2/users`

`/api/v1/users` returns a 200 of users index at version 1

`/api/v3/users` returns a 301 to `/api/v2/users`

`/api/asdf/users` returns a 301 to `/api/v2/users`

So that basically anything that doesn&#39;t specify the version links to the latest unless the specified version exists then redirect to it.

This is what I have so far:


    scope &#39;api&#39;, :format =&gt; :json do
      scope &#39;v:api_version&#39;, :api_version =&gt; /[12]/ do
        resources :users
      end

      match &#39;/*path&#39;, :to =&gt; redirect { |params| &quot;/api/v2/#{params[:path]}&quot; }
    end


API Versioning for Rails Routes

So I have successfully gotten AJAX requests to work before but I have always had to use a form, and then at the end of the submit do return false so that it doesn&#39;t refresh the page.

I have also just recently moved my JavaScript into a separate file this has caused my @ commands to fail. Because of this I do not no how to set my URL to my route?

HTML:

    &lt;button id=&quot;saveAsDefaultButton&quot;&gt;Save as default&lt;/button&gt;

Playframework Java code:

    public static Result saveDefaultPhoneForUser(String handset) {
		User currentUser = User.findByName(session(&quot;name&quot;));
		currentUser.lastControlledHandset = theHandset;
		currentUser.save();
		return ok();
	}

routes:

    POST	/							controllers.Application.saveDefaultPhoneForUser(handset : String)

javascript:

    $(&#39;#saveAsDefaultButton&#39;).click(function(evt) {
			$(&#39;#errors&#39;).hide();
			$.ajax({
				type : &#39;POST&#39;,
				url : &quot;controllers.Application.saveDefaultPhoneForUser&quot;,
				data : $(&#39;#controlledPhone option:selected&#39;).text(),
				dataType : &quot;text&quot;,
				success : function(data) {
					//setError(&#39;Call succedded&#39;);
					//$(&#39;#test1&#39;).attr(&quot;src&quot;, data)
				},
				error : function(data) {
					setError(&#39;Make call failed&#39;);
				}
			});
			return false;
		});

I&#39;m sure there is a way to do this but I am just having no luck finding anything.

Play 2.x: How to make an AJAX request with a common button

what is the difference between `resource` and `resources` in rails routing

     resource :geocoder

and

     resources :posts


What is real difference between them ?

Difference between resource and resources in rails routing?

I am using the Express framework in node.js with some middleware functions:

    var app = express.createServer(options);
    app.use(User.checkUser);

I can use the `.use` function with an additional parameter to use this middleware only on specific paths:

    app.use(&#39;/userdata&#39;, User.checkUser);

Is it possible to use the path variable so that the middleware is used for all paths except a specific one, i.e. the root path?

I am thinking about something like this:

    app.use(&#39;!/&#39;, User.checkUser);

So `User.checkUser` is always called except for the root path.




Content Type	Original Author	Original Content on Stackoverflow
Question	Manjunath Manoharan	View Question on Stackoverflow
Solution 1 - Ruby on-Rails	M. Cypher	View Answer on Stackoverflow
Solution 2 - Ruby on-Rails	David Vezzani	View Answer on Stackoverflow

Adding Hash parameter in the URL Rails Routes

Ruby on-Rails Problem Overview

Ruby on-Rails Solutions

Solution 1 - Ruby on-Rails

Solution 2 - Ruby on-Rails

How do you check if an object exists in the Twig templating engine in Symfony2?

java.lang.IllegalAccessError: tried to access method

Attributions